China 7.5KW 380V to 480V 3 phase variable speed variator 0 to 400Hz with Hot selling

Model Number: EM12-G3-7d5
Output Power: 7.5KW
Input Voltage: 380V
Output Voltage: 380V
Type: DC/AC Inverters
Output Type: Triple
Output Current: 17A
Output Frequency: 50Hz/60Hz
Size: 320*230*230mm
Weight: 5KG
Product name: 7.5KW variable speed drive
Application: machine tool fans
Certificate: CE ROHS
Protection: Overcurrent overvoltage
Overload Capacity: 60s with 150% of rated current
Warranty: 18 Months
pulse setting input: 0Khz to 100Khz
Output waveform: Midified Sine Wave
motor Rated power: 7.5KW
IP protection: IP20
Packaging Details: carton case packing

Frequency inverter7.5KW 380V to 480V 3 phase variable speed variator 0 to 400HzWe have frequency inverter(VFD, AC inverter, variable speed drive, variable frequency drive,frequency converter,) as below specification:1.: 220V Single Phase Input and 3PH Output, 0.75KW to 400KW2.: 220V Three Phase Input and 3PH Output, 0.75KW to 400KW3.: 220V Single Phase Input and Single Phase Output, 0.75KW to 132KW4.: 380V to 690V 3PH Input and 3PH Output, 0.75KW to 600KW

Product Name 7.5KW 380V to 480V 3 phase variable speed variator 0 to 400Hz
Matched Motor Voltage 380 input 3PH output
Rated current 17A
Matched rated power 7.5KW
Maximum frequency Vector control: 0~300 HzV/F control: 0~3000 Hz
Control mode Sensor-less vector control (SVC)Closed-loop vector control (FVC)(+ PG card)Voltage/Frequency (V/F) control
Analog inputs 3 analog input (AI1 AI2 Ai3) both of AI1 AI2 support 0V~10 V voltage input or 0mA~20mA current input.AI3 terminal that supports -10V~10 V voltage input
Startup torque G type: 0.5 Hz/150% (SVC); 0 Hz/180% (FVC)P type: 0.5 Hz/100%
Overload capacity G type: 60s for 150% of the rated current, 3s for 180% of the rated currentP type: 60s for 120% of the rated current, 3s for 150% of the rated current
Built-in simple PLC, multiple speeds It realizes up to 16 speeds via the simple PLC function or combination of DI terminal states.
Protection mode Motor short-circuit detection at power-on, input/output phase loss protection, over current protection, overvoltage protection, less voltage protection, overheat protection and overload protection,etc.

Feature for elevator inverter from 0.75KW to 400KW on voltage 380V:EM12 is first class frequency inverter with very strong software and hardware.It has servo drive feature,with perfect speed control mode,and excellent torque control mode.It can save 2 group motor parameters ,and can drive synchronous motor and asynchronous motor.It has sensor-less vector control(SVC),vector control+ PG; Small 2 3 5 Speed Transmission Gearbox V/F control and V/F separation control.It has 49 kinds digital input functions and 38 kinds digital output functions.It has S curve of acceleration and deceleration,user can self defined S curve turning time.The IGBT carrier frequency can auto adjustment according to heat sink temperature.35 kinds protection function,including auto detecting short circuit after power on.Including textile swing frequency and skip frequency function,etc.Voltage Range:220V~240V; 380V~440V.Input Frequency Range:45~65Hz.Output Voltage Range:0V~rated input voltage.Output Frequency Range:V/F( 0~3000Hz); Vector Control(0~300Hz).Overload Capacity:60s with 150% of rated current,3s with 180% of rated current.From 0.75~7.5KW Plastic house; 11~400KW is metal house.Speed Accuracy: ±0.5%(SVC); ±0.02%(VC).Pulse setting input: 0Khz~100Khz.All model built-in RS485 card,and approved by CE.EM12-G3/P3 models are integrated IGB
Our Service Solar pump inverterPV power 2.2KW 380VAC output voltage and 0 to 400HZ output frequency solar pump inverter
Built-in by pass soft starter380V to 690V
11KW to 600KW
Frequency inverter EM12 From 0.75KW up to 600KW
on voltage 220V to 690V
Our CompanyIntroduction for our inverter and soft starter factory.We have 6 factories and more than 820 staff. As a professional manufacturer of industrial automation products, we are always dedicated to soft starter, frequency inverter, servo motor and drive, EMI filters, harmonic wave AC choke, sine wave filter, brake units and resistor. In the year of 2008, EMHEATER Group does have established “China EM Technology Limited” to cultivate oversea market. We have following mature series products:1.EM12 series vector control inverter. (220V~690V:0.75KW~630KW).2.EM12-SP series solar pump inverter. (220V~690V:0.75KW~630KW).3.EM-GJ/GS series soft starter, (220V/380V~480/690V:5.5KW~ 600KW).4.EM-GW series online soft starter 380V up to 525V on power range from 11KW to 600KW. Directly run AC motor. LCD display screen.5.EM-GB series built-in bypass soft starter on 380V from 5.5KW to 400KW. Directly run AC motor. LCD display screen.6.EM-GS series soft starter on 220V up to 690V from 5.5KW to 650KW. LCD display screen.7.EM-HS series high voltage soft starter on 6KV to 10KV from 220KW to 11500KW.8.EMA to EMD series servo motor drive system, (220~380V; CZPT Baudouin CZPT CZPT CZPT Ricardo fishing boat machinery small propulsion heat exchanger marine engine manufacturer 0.2~22KW). And relative accessories(filter:choke:resistor).
ShowroomOur ShowroomWorkshopOur Workshop
WarehouseWarehouse for inverters and soft starters
Packing & DeliveryPacking Details : Packing, carton and wooden case
Delivery Details : 3-7 days after order of elevator inverters
Our Certifications Project PhotoEM12-G3-037 37KW 380V inverter for Ring machine with special function.16 steps speed with different time and frequency changing. EM12 380V 200KW 7.5KW 22KW 315KW frequency inverter used for brick factory with high performance.
EM12 inverter and EM-GS soft starter For crusher application.
EM-GW online soft starter for mining sector
EMHEATER 132KW inverter for Railway ventilation
EM12 inverters for constant water supply
EM12 inveters for ball mill
Areas of application: Electronics, textile, light industry, building materials, food, machinery, printing and dyeing, petrochemical, paper, logistics transportation, Wire drawing machine, winding machine, blow molding, chemical fiber, tobacco, grinder, mixer, extruding machine, injection molding machine, chemical industry, etc.
FAQQ: Are you trading company or manufacturer for inverters and soft starters?A: We are factory.
Q: How long is your delivery time for inverters and soft starters?A: Generally it is 3 days if the goods are in stock. or it is 5 days if the goods are not in stock, it is according to quantity.
Q: What is your warranty and after sales policy for soft starter and frequency inverter?A: 18 months warranty for all products. Within warranty time, China wholesale Auto parts input transmission gear Shaft main drive for 9 0571 86 we could replace new goods or free spare parts.


What is a worm gear reducer?

A worm gear reducer is a mechanical device that uses a worm gear and a worm to reduce the speed of a rotating shaft. The gear reducer can increase the output torque of the engine according to the gear ratio. This type of gear reducer is characterized by its flexibility and compact size. It also increases the strength and efficiency of the drive.

Hollow shaft worm gear reducer

The hollow shaft worm gear reducer is an additional output shaft connecting various motors and other gearboxes. They can be installed horizontally or vertically. Depending on size and scale, they can be used with gearboxes from 4GN to 5GX.
Worm gear reducers are usually used in combination with helical gear reducers. The latter is mounted on the input side of the worm gear reducer and is a great way to reduce the speed of high output motors. The gear reducer has high efficiency, low speed operation, low noise, low vibration and low energy consumption.
Worm gear reducers are made of hard steel or non-ferrous metals, increasing their efficiency. However, gears are not indestructible, and failure to keep running can cause the gear oil to rust or emulsify. This is due to moisture condensation that occurs during the operation and shutdown of the reducer. The assembly process and quality of the bearing are important factors to prevent condensation.
Hollow shaft worm gear reducers can be used in a variety of applications. They are commonly used in machine tools, variable speed drives and automotive applications. However, they are not suitable for continuous operation. If you plan to use a hollow shaft worm gear reducer, be sure to choose the correct one according to your requirements.

Double throat worm gear

Worm gear reducers use a worm gear as the input gear. An electric motor or sprocket drives the worm, which is supported by anti-friction roller bearings. Worm gears are prone to wear due to the high friction in the gear teeth. This leads to corrosion of the confinement surfaces of the gears.
The pitch diameter and working depth of the worm gear are important. The pitch circle diameter is the diameter of the imaginary circle in which the worm and the gear mesh. Working depth is the maximum amount of worm thread that extends into the backlash. Throat diameter is the diameter of the circle at the lowest point of the worm gear face.
When the friction angle between the worm and the gear exceeds the lead angle of the worm, the worm gear is self-locking. This feature is useful for lifting equipment, but may be detrimental to systems that require reverse sensitivity. In these systems, the self-locking ability of the gears is a key limitation.
The double throat worm gear provides the tightest connection between the worm and the gear. The worm gear must be installed correctly to ensure maximum efficiency. One way to install the worm gear assembly is through a keyway. The keyway prevents the shaft from rotating, which is critical for transmitting torque. Then attach the gear to the hub using the set screw.
The axial and circumferential pitch of the worm gear should match the pitch diameter of the larger gear. Single-throat worm gears are single-threaded, and double-throat worm gears are double-throat. A single thread design advances one tooth, while a double thread design advances two teeth. The number of threads should match the number of mating gears.

Self-locking function

One of the most prominent features of a worm reducer is its self-locking function, which prevents the input and output shafts from being interchanged. The self-locking function is ideal for industrial applications where large gear reduction ratios are required without enlarging the gear box.
The self-locking function of a worm reducer can be achieved by choosing the right type of worm gear. However, it should be noted that this feature is not available in all types of worm gear reducers. Worm gears are self-locking only when a specific speed ratio is reached. When the speed ratio is too small, the self-locking function will not work effectively.
Self-locking status of a worm reducer is determined by the lead, pressure, and coefficient of friction. In the early twentieth century, cars had a tendency to pull the steering toward the side with a flat tire. A worm drive reduced this tendency by reducing frictional forces and transmitting steering force to the wheel, which aids in steering and reduces wear and tear.
A self-locking worm reducer is a simple-machine with low mechanical efficiency. It is self-locking when the work at one end is greater than the work at the other. If the mechanical efficiency of a worm reducer is less than 50%, the friction will result in losses. In addition, the self-locking function is not applicable when the drive is reversed. This characteristic makes self-locking worm gears ideal for hoisting and lowering applications.
Another feature of a worm reducer is its ability to reduce axially. Worm gears can be double-lead or single-lead, and it is possible to adjust their backlash to compensate for tooth wear.

Heat generated by worm gears

Worm gears generate considerable amounts of heat. It is essential to reduce this heat to improve the performance of the gears. This heat can be mitigated by designing the worms with smoother surfaces. In general, the speed at which worm gears mesh should be in the range of 20 to 24 rms.
There are many approaches for calculating worm gear efficiency. However, no other approach uses an automatic approach to building the thermal network. The other methods either abstractly investigate the gearbox as an isothermal system or build the TNM statically. This paper describes a new method for automatically calculating heat balance and efficiency for worm gears.
Heat generated by worm gears is a significant source of power loss. Worm gears are typically characterized by high sliding speeds in their tooth contacts, which causes high frictional heat and increased thermal stresses. As a result, accurate calculations are necessary to ensure optimal operation. In order to determine the efficiency of a gearbox system, manufacturers often use the simulation program WTplus to calculate heat loss and efficiency. The heat balance calculation is achieved by adding the no-load and load-dependent power losses of the gearbox.
Worm gears require a special type of lubricant. A synthetic oil that is non-magnetic and has a low friction coefficient is used. However, the oil is only one of the options for lubricating worm gears. In order to extend the life of worm gears, you should also consider adding a natural additive to the lubricant.
Worm gears can have a very high reduction ratio. They can achieve massive reductions with little effort, compared to conventional gearsets which require multiple reductions. Worm gears also have fewer moving parts and places for failure than conventional gears. One disadvantage of worm gears is that they are not reversible, which limits their efficiency.

Size of worm gear reducer

Worm gear reducers can be used to decrease the speed of a rotating shaft. They are usually designed with two shafts at right angles. The worm wheel acts as both the pinion and rack. The central cross section forms the boundary between the advancing and receding sides of the worm gear.
The output gear of a worm gear reducer has a small diameter compared to the input gear. This allows for low-speed operation while producing a high-torque output. This makes worm gear reducers great for space-saving applications. They also have low initial costs.
Worm gear reducers are one of the most popular types of speed reducers. They can be small and powerful and are often used in power transmission systems. These units can be used in elevators, conveyor belts, security gates, and medical equipment. Worm gearing is often found in small and large sized machines.
Worm gears can also be adjusted. A dual-lead worm gear has a different lead on the left and right tooth surfaces. This allows for axial movement of the worm and can also be adjusted to reduce backlash. A backlash adjustment may be necessary as the worm wears down. In some cases, this backlash can be adjusted by adjusting the center distance between the worm gear.
The size of worm gear reducer depends on its function. For example, if the worm gear is used to reduce the speed of an automobile, it should be a model that can be installed in a small car.

China 7.5KW 380V to 480V 3 phase variable speed variator 0 to 400Hz     with Hot selling		China 7.5KW 380V to 480V 3 phase variable speed variator 0 to 400Hz     with Hot selling
editor by Cx 2023-07-13